The threat model is straightforward: email remains the primary attack surface, and Microsoft 365 is the dominant target. Hornetsecurity, founded in 2007 and now operating under Proofpoint after acquisition, has built its entire stack around this reality. The company processes over 72 billion emails annually across more than 125,000 customers in 120+ countries, with a product suite that runs the email security gauntlet - spam and malware filtering, advanced threat protection, encryption, archiving, and continuity - layered with backup solutions and security awareness training.
Technically, the work centers on cloud-native security engineering deployed at scale. The team builds and maintains capabilities spanning email security gateways, threat intelligence pipelines, encryption and compliance tooling, and backup infrastructure - all designed to integrate directly into Microsoft 365 environments. With 12,000+ channel partners and MSPs in the distribution chain, the architecture has to support multi-tenant operations and high-throughput email analysis without becoming a bottleneck.
Hornetsecurity has operated for over 17 years, growing to more than 700 employees with a presence across Europe, the USA, Canada, and South America. The company has been recognized among the fastest-growing technology companies in Germany. Now part of Proofpoint's broader security portfolio, engineering teams operate within a larger organizational context while maintaining the cloud security and compliance verticals that defined Hornetsecurity's original focus.
